My current GPU is an Asus GTX 1060 6gb dual OC and i'm wanting some advice on what GPU to upgrade to within a £500 budget that could run 144hz 1440p on my Acer Predator XB271HUA. I've been looking at the Zotac GTX 1080 ti mini and a second hand Asus ROG Strix 1080 on Ebay for £350.